Method of making awls.



L. A. GASGRAIN. g METHOD OF MAKING AWLS.

APPLICATION FILED AUG. 19, 1909.

997,238, Patented July 4, 1911.

NITED STATES PATENT OFFICE,

LOUIS A. CASGRAIN, OF BEVERLY; MASSACHUSETTS, ASSIGNOR TO UNITED SHOEMACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

METHOD OF MAKING AWLS.

To all whom it may concern:

Be it known that I, LOUIS A. CASGRAIN, a citizen of the United States,residing at Beverly, in the county of Essex and State of Massachusetts,have invented certain Improvements in Methods of Making Awls, of whichthe following description, in c011- nection with the accompanyingdrawings, is a specification, like reference characters on the drawingsindicating like parts in the several figures.

This invention relates to methods of making awls, and particularly to amethod of making awls of the type employed in the machine for insertingfastenings which con stitutes the subject-matter of my co-pendingapplication for Letters Patent, Serial No. 452,755, filed September 12,1908. In the said co-pending application is disclosed a novel form ofawl comprising a work penetrating portion, an offset stem and an impact-receiving ledge in line with the work penetrating portion, saidledge receiving the impact of the inserting mechanism whereby the awl isforced into the work. To meet the peculiar conditions presented by theposition of the awl in the machine the stem is preferably offset fromthe work penetrating portion and is obliquely positioned with respect tothe direction of the work feed. Furthermore the stem is preferablyprovided with an alining shoulder to permit the convenient adjustment ofthe awl into correct position as it is placed in its holder, and owingto the peculiar position of the awl in the machine this shoulder and theimpactreceiving ledge will each be formed at an oblique angle to theaxis of the stem.

It will be observed from the foregoing description that the position ofthe awl in the machine and the peculiar manner in which it is operatedcause it to assume a form which presents rather perpleXing problems ofmanufacture, especially in view of the fact that awls constitute theparts of machines for inserting fastenings which are most liable tobreakage and which must therefore be manufactured so that they can bereplaced at small cost.

A particular object of the present invention, therefore, is to provide amethod of manufacturing awls having some, all, or different combinationsof the features and cl'laracteristics above enumerated, by whichSpecification of Letters Patent.

Application filed August 19, 1909.

Patented July 4, 1911.

Serial No. 513,615.

such awls of good quality and of the above described construction can bemanufactured at comparatively small cost.

With the foregoing and other objects in View the method of thisinvention has been devised, and this method will now be particularlydescribed with especial reference to its employment in the manufactureof awls like that disclosed in the copending application above referredto.

In Figure 8 of the accompanying drawings is shown a completed aWl. Thisawl comprises the work penetrating portion 2, the offset stem 4, theimpact-receiving ledge or seat 6, and the alining shoulder 8.

The material from which the awls are to be made may come in the form ofwire or rods of steel of the proper composition and temper, and ispreferably circular in cross-section. The material may first be cut intoproper lengths, or the first step in the formation of the awl, namelythe bending, may be performed before the part which is to form the awlis cut off from the rest of the material.

In Fig. 1 is shown a piece of material which has been cut to the properlength to form an awl.

In Fig. 2 is illustrated vthe first or bending step in the manufactureof the awl. The bend 10 is made near one end of the piece from which theawl is to be formed, and the angle between the two parts upon the twosides of the bend is the angle which the work penetrating portion 2 ofthe awl makes to the stem 4. The bending is preferably performed withoutheating the material.

In Fig. 3 is shown what may constitute the next step in the manufactureof the awl, namely the formation of an alining shoulder 8' by millingaway a portion at the rear end. of the stem 4, although it will beunderstood that the order of several of the steps in the method is notfixed. After the alining shoulder has been milled upon the stem, theshort section 12 upon the other side of the bend is hollow milled, asshown in Fig. 4 to form the work penetrating portion 2. If the bend hasnot been so accurately made that the hollow milling results in theformation of a work penetrating portion of the desired length, thisportion may now be cut to the proper length, as shown in Fig. 5.

The ledge or seat 6 which is to receive the impact from the fasteninginserting mechanism is now milled, this ledge being formed by cuttingout some of the material in the bend 10. It will be noted, ashereinabove suggested, that both the fastening alining shoulder and theimpact-receiving ledge are milled at oblique angles to the axis of thestem. The ledge forming step is illustrated in Fig. 6.

In the machine disclosed in the co-pend ing application above referredto, the fastening is inserted through a feed plate which serves to guidethe fastening during the inserting operation and to feed the work byengagement with the partially inserted fastening. The a'wl is positionedin the machine so that it is separated from the opening in the feedplate a distance equal to the distance apart it is desired to have theinserted fastenings. As this distance is never very great, and as themovement of the awl into and out of operative position beneath theinserting mechanism is at right angles to the direction of the work feedand therefore at an oblique angle to the axis of the stem l it isdesirable to form a clearance upon the side of the seat adjacent to thefeed plate.

A succeeding step in the manufacture of the awl therefore is thatillustrated in Fig. 7, namely, the milling of the clearance 14.

A final step in the shaping of the awl will be the sharpening operation,this operation being necessary only if it is desired to have a diamondpoint on the awl. After the shaping of the awl has been completed itwill be hardened, tempered and polished.

Having described my invention what I claim as new and desire to secureby Letters Patent of the United States is The method of making an awlhaving a stem offset from its work penetrating portion and animpact-receiving ledge or seat in line with said work penetratingportion, which consists in bending, while cold, to the angle between thework penetrating portion and the offset stem material having thecross-section of the stem, milling the work penetrating portion upon apart upon one side of the bend and milling the impactreceiving ledge orseatout of said bend.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LOUIS A. CASGRAIN.

Witnesses:

H. DORSEY SPENCER, LEONARD M. Johnson.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

